The intimacy of that space makes it ideal for our duo show, says Campbell, who has been among the most in-demand musicians and producers in roots-rock, and has backed up such artists as Bob Dylan, Jackson Browne and Paul Simon.

“We’ve done two records together, so it will be mostly material from those records and some stuff we haven’t recorded that works better in the acoustic duo format,” Campbell said, during a phone chat which included Williams. “A good portion will be original tunes, plus traditional tunes and some other stuff we like to play.”

Campbell is a singer-songwriter who does everything from country and folk music to blues and rock. He and his wife both play guitar; he’ll also bring his fiddle and mandolin.

The couple will chat with the audience a bit, too. “Teresa is good with spontaneous. I’ll tell you that,” he said. Williams said it runs in her family, and that her mother can be very funny. “We should have her as the opening act,” she joked.

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As far as doing anything special to prepare for the StageOne performance, Williams said, “You practice your whole life. Basically that’s how you prepare for the show.”

Campbell said, “We only have a couple shows between now and then. Every one we do is its own rehearsal in a way. Every show you do, you discover new things, mistakes you make that you don’t want to make again, and things you hadn’t done before that are good, that you want to do again.”

“That’s the Lord’s truth,” said Williams, who’s been married to Campbell for 30-plus years, and said she knew he was “the one” the moment they met.

The two said if they can make somebody’s day a little better through their StageOne show, they’ll have done what they set out to do. Williams said, “Come and have an experience instead of a (TV/video) screen evening, have a live experience and feel something.”

Speaking of live experiences, we had to ask Campbell about one of his — the eight years he spent on the road with Dylan. What did he learn? He said Dylan was “always a hero of mine” and he was “thrilled” to tour with him, but if there was a takeaway, it was, “I realized in the middle of all that, as fortunate as I was to be working with someone I respected artistically that much ... I needed to pursue my own creative path to really experience the fulfillment I was looking for.

“That thing with Bob, as tours go, it’s pretty well the top of the mountain. To walk away from that to pursue your own thing, you’re going from living first class to back in the van, but it’s worth doing. You want to be in control of your own means of expression. I’m grateful to have had those years with him, but now doing this with Teresa is undoubtedly the most fulfilling thing I have done in my career.”